Replacing crank sensor on 2003 172 - is new wiring loom necessary?

[Braveheart]

Hi folks,

Happy New Year.

I've got a very frustrating intermittent misfire on my 2003 Clio 172 Cup. Tried replacing a few ignition items to no avail. Local mechanic has suggested replacing crank sensor albeit I've had no starting problems with the car whatsoever. Problem only arises after car has had a serious thrash such as on a trackday or a very spirited drive on country roads. Seems to be connected with either the engine getting very hot or the car being subjected to high longitudinal/lateral forces.

After a search on the forum, I see that some members (incl tech guide) have fitted a new crank sensor which comes with a new wiring loom which looks a bit fiddly to fit.

My question is whether it is really necessary to go through the hassle of fitting a new wiring loom - can I not just simply retain the existing connector and fit a replacement crank sensor such as this one from ECP?

http://www.eurocarparts.com/ecp/c/R...54b28c086e65d4f61ffdc5c936d97c328f95a9&000440

 

[andy-reid]

yes the modified plug is req'd and i wouldn't recomend a non genuine it may be blue but is it good quality i have replaced a non genuine one that a garage fitted it caused different problems the loom is req'd as the plug won't fit and the connectors are gold for lower resistance